174 citations · 562 across the 12 of their papers we have counts for
12 papers
It's Not Just Star Formation: A trend of low dark matter densities in the Andromeda dwarf galaxy system
Connor S. Pickett, Michelle L. M. Collins, Justin I. Read +8
Dynamical mass modeling of Andromeda (M31) dwarf spheroidal (dSph) galaxies has revealed a growing trend of lower central dark matter (DM) densities than predicted by pure DM struc…
Introducing the Condor Array Telescope: III. The expansion and age of the shell of the dwarf nova Z Camelopardalis, and detection of a second, larger shell
Michael M. Shara, Kenneth M. Lanzetta, James T. Garland +7
The existence of a vast nova shell surrounding the prototypical dwarf nova Z Camelopardalis (Z Cam) proves that some old novae undergo metamorphosis to appear as dwarf novae thousa…
Tilted outer and inner structures in edge-on galaxies?
Aleksandr V. Mosenkov, Anton A. Smirnov, Olga K. Sil'chenko +3
Tilted and warped discs inside tilted dark matter haloes are predicted from numerical and semi-analytical studies. In this paper, we use deep imaging to demonstrate the likely exis…
Astro2020 Science White Paper: Construction of an L* Galaxy: the Transformative Power of Wide Fields for Revealing the Past, Present and Future of the Great Andromeda System
Karoline M. Gilbert, Erik J. Tollerud, Jay Anderson +34
The Great Andromeda Galaxy (M31) is the nexus of the near-far galaxy evolution connection and a principal data point for near-field cosmology. Due to its proximity (780 kpc), M31 c…
Major mergers with small galaxies - the discovery of a Magellanic-type galaxy at z=0.12
Andreas Koch, Matthias J. Frank, Anna Pasquali +2
We report on the serendipitous discovery of a star-forming galaxy at redshift z=0.116 with morphological features that indicate an ongoing merger. This object exhibits two clearly…
Comparing the observable properties of dwarf galaxies on and off the Andromeda plane
Michelle L. M. Collins, Nicolas F. Martin, R. M. Rich +6
The thin, extended planes of satellite galaxies detected around both the Milky Way and Andromeda are not a natural prediction of the LCDM paradigm. Galaxies in these distinct plane…
Threshing in Action - The tidal disruption of a dwarf galaxy by the Hydra I Cluster
Andreas Koch, Andreas Burkert, R. Michael Rich +4
We report on the discovery of strong tidal features around a dwarf spheroidal galaxy in the Hydra I galaxy cluster, indicating its ongoing tidal disruption. This very low surface b…
Discovery of a super-Li rich turn-off star in the metal poor globular cluster NGC 6397
Andreas Koch, Karin Lind, R. Michael Rich
We report on the discovery of a super-Li rich turn-off star in the old (12 Gyr), metal poor ([Fe/H]=-2.1 dex) globular cluster (GC) NGC 6397, based on high-resolution MIKE/Magellan…
A Radial Velocity and Calcium Triplet abundance survey of field Small Magellanic Cloud giants
R. De Propris, R. M. Rich, R. C. Mallery +1
We present the results of a pilot wide-field radial velocity and metal abundance survey of red giants in ten fields in the Small Magellanic Cloud (SMC). The targets lie at projecte…
Discovery of Andromeda XIV: A Dwarf Spheroidal Dynamical Rogue in the Local Group?
Steven R. Majewski, Rachael L. Beaton, Richard J. Patterson +9
In the course of our survey of the outer halo of the Andromeda Galaxy we have discovered a remote, possible satellite of that system at a projected 162 kpc (11.7 degrees) radius. T…
The Detailed Star Formation History in the Spheroid, Outer Disk, and Tidal Stream of the Andromeda Galaxy
Thomas M. Brown, Ed Smith, Henry C. Ferguson +5
Using the Advanced Camera for Surveys on the Hubble Space Telescope, we have obtained deep optical images reaching stars well below the oldest main sequence turnoff in the spheroid…
Kinematics and Metallicity of M31 Red Giants: The Giant Southern Stream and Discovery of a Second Cold Component at R = 20 kpc
J. S. Kalirai, P. Guhathakurta, K. M. Gilbert +4
We present spectroscopic observations of red giant branch (RGB) stars in the Andromeda spiral galaxy (M31), acquired with the DEIMOS instrument on the Keck II 10-m telescope. The t…